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WGU Biochemistry OA Exam 2025 Questions and Answers 100% Pass

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WGU Biochemistry OA Exam 2025 Questions and Answers 100% Pass Bohr Effect chart (low pH) - C- High CO2 H- High H+ A- Acidic R-Release of O2(rt. Shift) T- tense state (in tissues) Primary structure - Sequence of amino acids that make up a protein Secondary Structure - Sequence of amino acids...

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  • December 5, 2024
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KatelynWhitman
WGU Biochemistry OA Exam 2025 Questions and
Answers 100% Pass


Bohr Effect chart (low pH) - ✔✔C- High CO2


H- High H+


A- Acidic


R-Release of O2(rt. Shift)


T- tense state (in tissues)


Primary structure - ✔✔Sequence of amino acids that make up a protein


Secondary Structure - ✔✔Sequence of amino acids fold.


Tertiary Structure - ✔✔-more folding in a 3D shape.


-R groups (side chains)


Quaternary Structure - ✔✔Protein has more than 1 polypeptide chain.


Chemical reaction - ✔✔-absorb and release energy


-activation energy


-energy is released (heat & light) when bonds are broken.


Exothermic reaction - ✔✔Exo=to release


Thermo=heat


-chemical reaction that releases more energy than it absorbs (as heat & light)



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,Example of exothermic reaction - ✔✔Cellular respiration- breaks down glucose to make cellular energy


Endothermic reaction - ✔✔Endo=absorb


Thermos=heat


-absorbs more energy than it releases


Example of endothermic reaction - ✔✔Photosynthesis- takes in light to break down to create glucose


Catalyst - ✔✔Substance that will decrease the activation energy needed to start a chemical reaction


Enzymes - ✔✔-catalysts used by cells


-increase the rate of chemical reaction


-specific to substrates


Enzyme structure - ✔✔-they are proteins


-twist, fold, bend to final shape


-shape attracts specific molecules


Substrate - ✔✔Molecules that bind to the enzyme


Active site - ✔✔-location on enzyme where substrate binds


Function of DNA polymerase in process of PCR. - ✔✔-increase expression


-2 genes


-SIRT1 & SIRT2


Function of a molecule - ✔✔Structural component of the lipid bilayer




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, How would lipid production in a cell change in order to maintain fluidity of its cell membrane as it

adapts to lower temperatures? - ✔✔Produce lipids with shorter fatty acid chains


Function of cholesterol - ✔✔Maintains membrane fluidity


Lipid (fat) soluble vitamins - ✔✔A, D, E, K


What stimulates beta-oxidation of fatty acids? - ✔✔An increase in NAD+ concentration in the

mitochondrial matrix


What occurs in an otherwise healthy person whose diet has very few carbs and high levels of fats? -

✔✔Acetone is produced in the blood


Amino acids - ✔✔-Non-polar (hydrophobic)


-Polar charged


-Polar uncharged


Which type of mammalian DNA damage repair requires the presence of the chromosome that is

homologous to the damaged chromosome? - ✔✔Recombination


Xeroxerma Pigmentosum (XP) - ✔✔A recessive genetic disease that occurs when one or more of the genes

that perform nucleotide excision repair are nonfunctional


Why do XP patients have a much higher incidence of skin cancer than the general population? - ✔✔The

mutation of all other genes is higher due to failure to repair.


Assuming 100% reaction efficiency, how many DNA copies are created after the completion of 4 complete

PCR cycles? - ✔✔16


What is the function of DNA polymerase in the process of PCR? - ✔✔It recognizes the primers and uses

the available dNTPs to replicate the template DNA sequence.



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